DADA SOM/DADA Hardware/Peripherals/Audio
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Peripheral Audio[edit | edit source]
The Multichannel Audio Serial Port (MCASP) module - in the DADA SOM - supports time-division multiplexed (TDM) stream, Inter-IC Sound (I2S) protocols reception and transmission and an inter-component digital audio interface transmission (DIT).
Description[edit | edit source]
Each MCASP module has the following features:
- Independent serializer for each AXRx channel of each MCASP module
- Two independent clock generator modules for transmit and receive (receive and transmit at different clock rates).
- Functional clock can be generated:
- Internally (controller mode)
- Supplied over MCASP serial interface (target mode)
- controllable functional clock divide ratio
- Independent transmit and receive modules, each includes:
- Programmable clock and frame sync generator
- TDM streams from 2 to 32, and 384 time slots
- Support for time slot sizes of 8, 12, 16, 20, 24, 28, and 32 bits
- bit manipulation
- Glueless connection to audio ADC, DAC, codec, digital audio interface receiver (DIR), and S/PDIF physical layer components
- Integrated digital audio interface transmitter (DIT):
- S/PDIF, IEC60958-1, AES-3 formats
- 384-slot TDM with external digital audio interface receiver (DIR) device: an external DIR receiver integrated circuit should be used with I2S output format
- Support for 2 × DMA requests (one per direction)
- One transmit and one receive interrupt request common for all serializers
